258 lines
14 KiB
JSON
258 lines
14 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-72375",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-08-09T03:40:39.922Z",
|
|
"datePublished": "2026-08-15T05:56:09.790Z",
|
|
"dateUpdated": "2026-10-30T12:29:10.338Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-30T12:29:10.338Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix reinitialisation of the inode, in particular ->lock_work\n\nIt seems that initalising afs_vnode::lock_work a single time in the slab's\ninit function isn't sufficient for work_structs. This results in the\nDEBUG_OBJECTS debugging stuff producing a warning occasionally when running\nthe generic/131 xfstest:\n\n ODEBUG: activate not available (active state 0) object: 0000000016d8760f object type: work_struct hint: afs_lock_work+0x0/0x220\n WARNING: lib/debugobjects.c:629 at debug_print_object+0x4b/0x90, CPU#3: locktest/7695\n ...\n CPU: 3 UID: 0 PID: 7695 Comm: locktest Tainted: G S 7.1.0-build3+ #2771 PREEMPT\n ...\n RIP: 0010:debug_print_object+0x65/0x90\n ...\n Call Trace:\n <TASK>\n ? __pfx_afs_lock_work+0x10/0x10\n debug_object_activate+0x122/0x170\n insert_work+0x25/0x60\n __queue_work+0x2e0/0x340\n queue_delayed_work_on+0x48/0x70\n afs_fl_release_private+0x57/0x70\n locks_release_private+0x5c/0xa0\n locks_free_lock+0xe/0x20\n posix_lock_inode+0x55f/0x5b0\n locks_lock_inode_wait+0x81/0x140\n ? file_write_and_wait_range+0x50/0x70\n afs_lock+0xcd/0x110\n fcntl_setlk+0x10d/0x260\n do_fcntl+0x24e/0x5b0\n __do_sys_fcntl+0x6a/0x90\n do_syscall_64+0x11e/0x310\n entry_SYSCALL_64_after_hwframe+0x71/0x79\n\nFix this by reinitialising ->lock_work after allocating an inode.\n\nAlso, flush ->lock_work when the inode is being evicted to make sure it's\nnot still running."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The bug is reached only via the local VFS file-locking path (fcntl/F_SETLK/F_SETLKW → afs_lock → afs_fl_release_private → queue_delayed_work on vnode->lock_work), not from inbound AFS/RxRPC network packet handling.\nAC:L - An attacker can reliably drive the fault by cycling POSIX locks and inode eviction/reuse on AFS files they control; both sides of the workqueue/slab race are attacker-influenced and freely retryable, matching the intermittent generic/131 locktest reproducer.\nPR:L - On the highest-impact deployment (enterprise/university hosts with AFS already mounted), any unprivileged local user who can open files on that mount can trigger fcntl locking without real root or CAP_SYS_ADMIN in the init namespace.\nUI:N - Exploitation requires no action by another user; the attacker directly issues fcntl lock/unlock operations on file descriptors they hold on the shared AFS mount.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same kernel security boundary; this is not a VM escape, IOMMU bypass, or cross-authority sandbox breakout.\nC:H - Stale lock_work reuse and eviction without flush_delayed_work() can leave afs_lock_work operating on freed/reallocated afs_vnode slab memory, a classic use-after-free that can disclose or corrupt adjacent kernel heap contents.\nI:H - Corrupting or re-queuing a stale delayed_work can corrupt workqueue lists and attacker-controlled vnode fields, providing primitives consistent with arbitrary kernel write and control-flow hijack, not merely a benign warning.\nA:H - Invalid work_struct state triggers kernel warnings/oops in testing and can panic the system when deferred lock work runs against an evicted inode or poisoned slab object during normal lock release."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/afs/inode.c",
|
|
"fs/afs/super.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "1471eef04c074029e2512a36e4d37d8547ff9762",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "2e7888bb635d9bc84359491347b236cc232ca4df",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "34dff35154e2fb3987ec5e0b40def14c64eadeb1",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "63d3f283858fae097fb09ddd4ce46bb0bc1f9d01",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "ebfd13c0367adb43d7c0a72f5cd7e004e60c6b28",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "e8d6c554126b830217c5e9f549e0e21f865a0a8a",
|
|
"lessThan": "5597fbd1e7c161914f20315a726e54025b0fdadb",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/afs/inode.c",
|
|
"fs/afs/super.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "2.6.23",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "2.6.23",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.191",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.160",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.114",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.40",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1.5",
|
|
"lessThanOrEqual": "7.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "6.1.191"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "6.6.160"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "6.12.114"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "6.18.40"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "7.1.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.23",
|
|
"versionEndExcluding": "7.2"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/1471eef04c074029e2512a36e4d37d8547ff9762"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/2e7888bb635d9bc84359491347b236cc232ca4df"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/34dff35154e2fb3987ec5e0b40def14c64eadeb1"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/63d3f283858fae097fb09ddd4ce46bb0bc1f9d01"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/ebfd13c0367adb43d7c0a72f5cd7e004e60c6b28"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/5597fbd1e7c161914f20315a726e54025b0fdadb"
|
|
}
|
|
],
|
|
"title": "afs: Fix reinitialisation of the inode, in particular ->lock_work",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-72375",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T18:48:13.426490Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T18:55:20.832Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |